From the screenshot, you can see that both the source and target databases have the same columns.

However, when I generate the deployment script, I get an "Unsupported datatype" error:
Severity: High
Object: PurchaseOrder
Title: The type Date on object [dbo].[PurchaseOrder].[PODate] is not supported in the target database version.
This clearly is an erroneous message, but is there something I need to do to configure SQL Compare to prevent it from being generated?